Substituent positions and types for the inhibitory effects of phenolic inhibitors in coal spontaneous combustion

Gao, Ao; Sun, Yi; Hu, Xiangming; Song, Shaowen; Lu, Wei; Liang, Yuntao; Wang, Xinmeng; Li, Jinliang; Meng, Shaocong

doi:10.1016/j.fuel.2021.122104

Cited by 17 publications

(5 citation statements)

References 55 publications

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“…Xi et al 62 Antioxidant materials involve good chemical inhibition of CSC and mainly inhibit coal oxidation by neutralizing free radicals, chelating metal ions, and reducing oxygen adsorption. 62,110 Antioxidants have several advantages, including good stability, high efficiency, and a wide range of action in coal types, and have good inhibitory effects on the low-temperature oxidation process of CSCs. 58,64 Improving the thermal stability of antioxidants with physical inhibition is particularly important for the application of antioxidant inhibitors.…”

Section: Antioxidant Inhibitorsmentioning

confidence: 99%

Review and prospects of research on materials to prevent and extinguish mine fires

Niu

Sun

et al. 2023

Fire and Materials

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Coal spontaneous combustion (CSC) has hindered the utilization of coal resources and the development of the global economy for centuries. At present, many materials are used for preventing and extinguishing CSC fires, and different types of materials have various sites of action. In this paper, research on CSC fire prevention and extinguishing materials is reviewed and proposed. The preparation schemes and effects of physical barrier materials, chemical inhibitors, composite materials, and other fields of fire prevention materials were discussed. The improved compounding schemes of CSC inhibiting materials were analyzed regarding the characteristics of base materials and material properties. It was found that in the field of fire prevention materials, plant extracts, hydrolyzed proteins, biomass, and other green recycling materials have gradually become the new trend in materials. The composite material has a synergistic physical barrier and chemical inhibition and has a good inhibitory effect on coal heat storage and group activation, which has become an inhibitory material that is highly concerning. CSC inhibiting technology involving microbial control has emerged and exhibits notable characteristics, including a green cycle and long action time, but its application still needs to control the coexistence of heterogeneous microorganisms and improve the environmental livability. High‐quality firefighting materials, which are used in preventing battery fires, fighting building fires, inert coatings of cotton fabric, and other fields, have potential applicational value for CSC prevention. This review aims to provide new ideas for the research of CSC fireproof materials.

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Section: Antioxidant Inhibitorsmentioning

confidence: 99%

Review and prospects of research on materials to prevent and extinguish mine fires

Niu

Sun

et al. 2023

Fire and Materials

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“…Furthermore, the hydrogen bonds of phenolic inhibitors inhibited the consumption of active free radicals in coal. 25 Xue et al prepared a composite or gel and explored the inhibitory effect of melatonin on the heat production of coal oxidation. They found that melatonin had a better scavenging effect on free radicals in coal.…”

Section: Guo Et Al Developed a Composite Inhibiting Materials By Inco...mentioning

confidence: 99%

“…Gao et al investigated the inerting effect of phenolic inhibitors on coal and discovered that phenolic antioxidant materials have a good isolation and cooling effect on coal. Furthermore, the hydrogen bonds of phenolic inhibitors inhibited the consumption of active free radicals in coal 25 . Xue et al prepared a composite or gel and explored the inhibitory effect of melatonin on the heat production of coal oxidation.…”

Section: Introductionmentioning

confidence: 99%

Study on the inhibitory effect of DL‐malic acid on the phase structure and combustion characteristics of coal

Sun,

Niu,

Yang

et al. 2023

Fire and Materials

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DL‐malic acid (DMA), as a recognized antioxidant inhibitor and chelating agent in the food and chemical industries, has good application prospects in coal fire prevention and control. This paper investigates the impact of a DMA solution on the surface properties and phase structure of coal through a range of analytical techniques, including electron microscope scanning, particle size analysis, and x‐ray diffraction. The thermal behavior characteristics of DMA‐treated coal were analyzed using thermogravimetric experiments. The results show that after adding malic acid, the particle size of coal sample is reduced, the sphericity and roundness are reduced, and the pore size is increased. The hydroxyapatite and calcite components in coal were dissolved and consumed, and the calcite components were gradually depleted with the increase of DMA concentration. The flocculent structure produced by the condensation of the crushing residue and broken small particles are attached to the internal pores of coal, which reduced the coal oxygen contact sites and increases the content of the sealed solution, resulting in the increase of the thermal characteristic temperature of the coal and the inhibition of the oxidation heat generation process. DMA has obvious inhibitory effect on fresh coal and oxidized coal, and the inhibitory effect is stronger on high‐temperature oxidized coal. Therefore, DMA can be effectively applied to the prevention and control of spontaneous combustion of residual coal in goaf. The research results provide a reference for the research of coal fire prevention technology and the preparation of environmentally friendly flame retardant materials.

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“…That is, with increasing burial depth, the oxygen consumption rate of the unloaded coal body oxidation reaction gradually increases. The minimum energy required for the coal oxidation reaction is called the activation energy, which determines the speed of the oxidation reaction Gao et al 2022). According to the 17 oxidation reaction rate, the activation energy is calculated, and Equation ( 2) is obtained after sorting.…”

Section: Variation Law Of Oxygen Consumption Ratementioning

confidence: 99%

Study on the evolution law of oxidation characteristics of unloaded coal based on the change of buried depth

Ma,

Duan

et al. 2023

Preprint

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To obtain the change law of oxidation characteristics of unloaded coal at different burial depths, the experimental coal samples were loaded and unloaded with various degrees of stress according to the in situ stress characteristics of the Changcun coal mine in China. Through low-field nuclear magnetic resonance (LNMR) and temperature-programmed experiments, the change law of oxidation characteristic parameters and pore structure parameters of unloaded coal under different stresseswas tested. The main conclusions are obtained through the analysis of the experimental results. ①With increasing burial depth, the oxidation reaction products of unloaded coal under different stresses regularly changed. ② With increasing burial depth, the oxidation characteristics of unloaded coal at different burial depths gradually increased and gradually slowed down after 1200-1600 m, and the concept of the "critical depth" of unloaded coal oxidation characteristics was proposed. ③ With increasing burial depth, the porosity of the unloaded coal body gradually decreased, the number of micropores increased, and the number of small pores, mesopores and macropores gradually decreased. It is further concluded that the difference in oxidation characteristics of unloaded coal at different depths was caused by the change in the number of micropores.

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Substituent positions and types for the inhibitory effects of phenolic inhibitors in coal spontaneous combustion

Cited by 17 publications

References 55 publications

Review and prospects of research on materials to prevent and extinguish mine fires

Review and prospects of research on materials to prevent and extinguish mine fires

Study on the inhibitory effect of DL‐malic acid on the phase structure and combustion characteristics of coal

Study on the evolution law of oxidation characteristics of unloaded coal based on the change of buried depth

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